// Copyright 2024 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <Storages/Page/PageDefinesBase.h>

namespace DB::DM
{

constexpr PageIdU64 DELTA_MERGE_FIRST_SEGMENT_ID = 1;

class Segment;
using SegmentPtr = std::shared_ptr<Segment>;
using Segments = std::vector<SegmentPtr>;
using SegmentPair = std::pair<SegmentPtr, SegmentPtr>;

} // namespace DB::DM
